GMC V6 rare valve covers? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Corts60** · 02-13-2012, 12:50 AM

All you V6 fans check out this video and look what is stamped in the valve covers! I have never seen a set of these. I wonder how rare they are? Normally it always just says GMC.

351 GMC 5500 351 v-6 - YouTube

**Corts60** · 02-14-2012, 12:19 PM

bump

jbgroby · 02-14-2012, 05:24 PM

Damn, those ARE rare!

krazy_texan · 02-14-2012, 08:06 PM

ya cant say i ever seen them like that before.

duallyjams · 02-14-2012, 09:02 PM

I have a set on my 401M.

**MusicMan70** · 02-14-2012, 10:50 PM

Info from the Jolly website. Pete Chronis, one of the acknowledged GMC experts on that site, had this reply below. Also here are a couple of 1974 GMC 379's with the "mark"; last year of Official production for all V-6's. This is a rare engine as well. (73-74)

> In 1972 GMC V6 valve covers had "V6" stamped on them rather
than "GMC" that had something to do with all GM engines being corporate
engines rather than being individual to each division. By 1973 the GMC
V6 line of engines was incorporated to Chivy's medium duty trucks which
were assembled in GMC's Pontiac Michigan Plant, nothing but GMC trucks
rebadged as Chivy's and that also was true for bigger trucks 7500-9500
series in preceding years. Also in 1972 Oldsmobile losts their logo on
it's V8's valve covers, probably the GMC 637 V8 as well in it's last
year of production.

Pete Chronis
Northern Cal.

Wrenchbender Ret · 02-14-2012, 11:33 PM

What about plaid valve covers on a v-6? I had a pair that were painted with a plaid design. I understood they were put on after a recall.

**Corts60** · 02-14-2012, 11:48 PM

Quote:

Originally Posted by Wrenchbender Ret

What about plaid valve covers on a v-6? I had a pair that were painted with a plaid design. I understood they were put on after a recall.

Those are rare as well. Supposedly a 1963 only thing. I've heard both that they were affixed to engines that had been corrected from an issue during production and I have also heard they were made to promote GMC's "thriftyness".

Joemomma1 · 02-15-2012, 12:14 AM

I was wondering how many cylinders it had but those covers say it all. I'm being sarcastic, it just tickles me to see that for some reason. Points for being different though.
Posted via Mobile Device

markeb01 · 02-15-2012, 01:49 AM

As noted by Pete Chronis above, I would imagine the change was due to the lawsuit that resulted when GM got caught putting Chevrolet engines in Oldsmobile’s. GM lost a class action law suit over the practice. After that all GM engines I’m aware of got painted “corporate blue” and lost their brand identification.

jbgroby · 02-15-2012, 09:14 AM

Quote:

Originally Posted by Wrenchbender Ret

What about plaid valve covers on a v-6? I had a pair that were painted with a plaid design. I understood they were put on after a recall.

The coating on the valve covers was a hard type of placis and heat shrinked onto the cover, you can remove them but it takes some effort.

02-14-2012, 12:19 PM	#2
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: GMC V6 rare valve covers? bump __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

02-14-2012, 05:24 PM	#3
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,772	Re: GMC V6 rare valve covers? Damn, those ARE rare! __________________ http://s1299.photobucket.com/user/jb...23904108567829

02-14-2012, 08:06 PM	#4
krazy_texan Registered User Join Date: Oct 2002 Location: West Des Moines, Ia Posts: 3,233	Re: GMC V6 rare valve covers? ya cant say i ever seen them like that before. __________________ Krazy Texan My Trucks are made with Wrenches not Chop Sticks 1967 GMC 3/4 ton "Johnny Cash" 1990 v1500 suburban 1967 Ford f100 Swb 4x4 "green bean" GOD BLESS JESUS, JOHN WAYNE, AND THE ALAMO

02-14-2012, 09:02 PM	#5
duallyjams Registered User Join Date: May 2007 Location: Deale Md Posts: 4,663	Re: GMC V6 rare valve covers? I have a set on my 401M. __________________ James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change!

02-14-2012, 10:50 PM	#6
MusicMan70 Senior Member Join Date: Feb 2011 Location: Corona, CA Posts: 1,842	Re: GMC V6 rare valve covers? Info from the Jolly website. Pete Chronis, one of the acknowledged GMC experts on that site, had this reply below. Also here are a couple of 1974 GMC 379's with the "mark"; last year of Official production for all V-6's. This is a rare engine as well. (73-74) > In 1972 GMC V6 valve covers had "V6" stamped on them rather than "GMC" that had something to do with all GM engines being corporate engines rather than being individual to each division. By 1973 the GMC V6 line of engines was incorporated to Chivy's medium duty trucks which were assembled in GMC's Pontiac Michigan Plant, nothing but GMC trucks rebadged as Chivy's and that also was true for bigger trucks 7500-9500 series in preceding years. Also in 1972 Oldsmobile losts their logo on it's V8's valve covers, probably the GMC 637 V8 as well in it's last year of production. Pete Chronis Northern Cal. Attached Images __________________ MusicMan70 1961 GMC Suburban

02-14-2012, 11:33 PM	#7
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: GMC V6 rare valve covers? What about plaid valve covers on a v-6? I had a pair that were painted with a plaid design. I understood they were put on after a recall.

02-15-2012, 12:14 AM	#9
Joemomma1 Registered User Join Date: Mar 2009 Location: CA Posts: 814	Re: GMC V6 rare valve covers? I was wondering how many cylinders it had but those covers say it all. I'm being sarcastic, it just tickles me to see that for some reason. Points for being different though. Posted via Mobile Device

02-15-2012, 01:49 AM	#10
markeb01 Senior Enthusiast Join Date: Feb 2007 Location: Spokane Valley, WA Posts: 8,356	Re: GMC V6 rare valve covers? As noted by Pete Chronis above, I would imagine the change was due to the lawsuit that resulted when GM got caught putting Chevrolet engines in Oldsmobile’s. GM lost a class action law suit over the practice. After that all GM engines I’m aware of got painted “corporate blue” and lost their brand identification.



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